145022239 has 2 divisors, whose sum is σ = 145022240. Its totient is φ = 145022238.

The previous prime is 145022233. The next prime is 145022263. The reversal of 145022239 is 932220541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145022239 - 2¹³ = 145014047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145022233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72511119 + 72511120.

It is an arithmetic number, because the mean of its divisors is an integer number (72511120).

Almost surely, 2^145022239 is an apocalyptic number.

145022239 is a deficient number, since it is larger than the sum of its proper divisors (1).

145022239 is an equidigital number, since it uses as much as digits as its factorization.

145022239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 145022239 is about 12042.5179676013. The cubic root of 145022239 is about 525.3856443914.

The spelling of 145022239 in words is "one hundred forty-five million, twenty-two thousand, two hundred thirty-nine".